macOS Catalina gives you more of everything you love about Mac. Experience music, TV, and podcasts in three all-new Mac apps. Enjoy your favorite iPad apps now on your Mac. Extend your workspace and expand your creativity with iPad and Apple Pencil. And discover smart new features in the apps you use every day. Now you can take everything you do above and beyond.
Check compatibility
If you're using one of these computers with OS X Mavericks or later,* you can install macOS Catalina. Your Mac also needs at least 4GB of memory and 12.5GB of available storage space, or up to 18.5GB of storage space when upgrading from OS X Yosemite or earlier.
MacBook introduced in 2015 or later
MacBook Air introduced in 2012 or later
MacBook Pro introduced in 2012 or later
Mac mini introduced in 2012 or later
iMac introduced in 2012 or later
iMac Pro (all models)
Mac Pro introduced in 2013 or later
Step 1 Install Software on macOS Catalina. Download the Mac version of UUByte ISO Editor on Catalina and install the app. Insert a blank USB in the mac and launch the UUByte app. Step 2 Import Windows 7 ISO File. On the interface of the UUByte ISO Editor tap on the 'Burn' icon from the options. The Catalina installer app will be in your Applications folder, so you can go there and launch it later to upgrade your Mac to the new operating system. Make a bootable installer drive: The quick way. For files being downloaded from the Mac App Store, the easiest way to check their progress is by mousing over the Launchpad icon in the Dock. You'll see a progress bar below the Launchpad icon.
* To upgrade from Lion or Mountain Lion, first upgrade to El Capitan, then upgrade to Catalina. To find your macOS version, Mac model, memory, and storage space, choose About This Mac from the Apple menu . If your Mac isn't compatible with macOS Catalina, the installer will let you know. View the complete list of compatible computers.
Make a backup
Before installing any upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.
Get connected
It takes time to download and install macOS, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.
Download macOS Catalina
If you're using macOS Mojave, get macOS Catalina via Software Update: Choose Apple menu > System Preferences, then click Software Update.
Or use this link to open the macOS Catalina page on the App Store: Get macOS Catalina. Then click the Get button or iCloud download icon.
Begin installation
After downloading, the installer opens automatically.
Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.
If the installer asks for permission to install a helper tool, enter the administrator name and password that you use to log in to your Mac, then click Add Helper.
Allow installation to complete
Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both macOS and related updates to your Mac firmware.
Stay up to date
After installing macOS Catalina, you will be notified when updates to macOS Catalina are available. You can also use Software Update to check for updates: Choose Apple menu > System Preferences, then click Software Update.
Or get macOS Catalina automatically
If you're using OS X El Capitan v10.11.5 or later and your App Store preferences or Software Update preferences are set to download new updates when available, macOS Catalina will download conveniently in the background, making it even easier to upgrade. A notification will inform you when macOS Catalina is ready to be installed. Click Install to get started, or dismiss the notification to install later. When you're ready to install, just open the file named Install macOS Catalina from your Applications folder.
Learn more
- If the installer shows a list of apps that are not optimized for your Mac, learn about 32-bit app compatibility, then choose whether to proceed with the installation.
- For the strongest security and latest features, upgrade to macOS Catalina. If you have hardware or software that isn't compatible with Catalina, you might be able to install an earlier macOS, such as Mojave, High Sierra, Sierra, or El Capitan.
- You can also use macOS Recovery to reinstall macOS.
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Creating bootable Windows 7 USB is super easy on a Windows PC. You can pick up the best from dozens of ISO burning software like Media Creation Tool developed by Microsoft. You won't be such lucky on a Mac computer, especially on latest macOS Catalina, which retired burning feature in Disk Utility app.
The fact is that the USB is not bootable by pasting the ISO image or extracted folder to USB. That's why we need special programs to do that. There are a limited number of utilities available on Mac for this purpose. Please follow the suggestions in below to create a Windows 7 Bootable USB on macOS Catalina. Before getting started, make sure you already downloaded Windows 7 ISO file on a macOS Catalina.
Create Windows 7 Bootable USB on Mac #1: UUByte for Mac
UUByte ISO Editor is a popular program for creating bootable Windows USB on PC. And recenly, the developer released the Mac version to public. This means you can use the same features on a Mac without limitations.
UUByte ISO Editor for Mac is a simple to use software that comes with beautiful user interface. Plus, The functions are easily understandable and you know how it works at first glance. Besides, this Mac ISO burner has several other powerful features for different ISO tasks, including edit, create and extract, making it a perfect tool for handling ISO files.
Step 1 Install Software on macOS Catalina
Download the Mac version of UUByte ISO Editor on Catalina and install the app. Insert a blank USB in the mac and launch the UUByte app.
Step 2 Import Windows 7 ISO File
On the interface of the UUByte ISO Editor tap on the 'Burn' icon from the options. It will lead you to a screen where you will need to browse & select the Windows 7 ISO file from downloads.
Step 3 Create Windows 10 Bootable on Mac Catalina
Select your USB drive from the drop-down menu and hit 'Burn' button to start the process of creating Windows 7 bootable USB. Please wait and don't let the Mac getting into sleep until you see a message, saying 'burning successfully'.
The speed and the uncomplicated process make UUByte ISO Editor a favorable option especially when there is urgency. And most importantly, UUByte ISO Editor is fully compatible with latest Windows and macOS.
Create Windows 7 Bootable USB on Mac #2: balenaEtcher
Initially, Etcher is a stand along utility developed by balena team to flashing customized Linux OS to SD card for single-board computer, like Raspberry Pi, Arduino. Later, the author open sourced Etcher project on GitHub and many new features are added to this software. Now, you can use this cool app to create Windows 7 bootable USB on Mac by burning Windows ISO to USB. It is completely free and has an ultra simple user interface.
Step 1: Download Etcher installation file for macOS from the download section of Etcher official website.
Step 2: Insert a blank USB to Mac. On the interface of Etcher, hit the 'Select image' button and browse to load Windows 7 ISO file into the app.
Step 3: Select drive name of USB drive you just plugged in and then Hit 'Flash' button to start burning Windows ISO to USB.
Although it is very easy to use and the user interface is amazing, there have been reports of the tool malfunctioning quite a few times. And the burning time is much longer than UUByte ISO Editor.
Create Windows 7 Bootable USB on Mac #3: Boot Camp
Boot Camp is a built-in free utility that comes preinstalled with macOS Catalina. Its purpose is to reduce the time Mac user spend on tha task for installing Windows OS on a Mac. It is a reputed app developed by Apple but has major issues with Windows 7 ISO at sometimes, so we don't recommend it at first place to avoid wasting your time. However, it is still a legit solution to create Windows 7 bootable USB on Mac.
Step 1: Type 'boot camp' in search bar to locate the app from Lanuchpad. Click 'Continue' button when Boot Camp Assistant is running. Now, you need to select a task from next Windows. Make sure check the option named 'Create a Windows 10 or later install disk'.
Step 2: Insert an USB drive and tap 'Continue button again to get into the burning Window. Boot Camp will automatically search Windows ISO file from the downloads folder. If the file is not at there, then click 'Choose...' tab to import Windows 7 ISO into the app.
Step 3: Select 'Continue' icon only when you are sure of the operation. Because this will start the flashing process and erase all data on target USB. The USB name changes to WININSTALL after the formatting process is done. Close the window once done.
Boot Camp Assistant is extremely convenient for Mac users as it does not require you to download anything additionally. However, 'Bootable USB cannot be created' is a common error that users have been facing while using Boot camp to create Windows 7 bootable USB on Mac.
Create Windows 7 Bootable USB on Mac #4: VirtualBox
VirtualBox is a powerful application that allows a host machine running a different guest OS at the same time. We can create a Windows virtual machine on Mac and create a bootable Windows 7 USB drive within the virtual machine, where you can get a bunch of free tools for doing that. It is free but takes tremendous time to finish the task.
Step 1: Download VirtualBox on macOS Catalina. Open the folder and double-click on the VirtualBox.pkg named file to install the app. Once installed, launch the app open. Also, download the Windows 7 ISO file to continue to the next step.
Step 2: On the interface of VirtualBox, click 'New' menu located at the top to start creating a new virtual machine. Now, giave the new virtual machine a name and select the OS type and version.
Step 3 : Import Windows 7 ISO image into the app and follow the prompt to finish the creation process.
Step 4: Now insert USB drive to Mac and switch to Windows 7 virtual machine. Once getted in, download Media Creation Tool and run the app. After accepting the license terms, select the option for creating installation media.
Step 5: In the next screen, change the Edition to Windows 7, Language to English and Architecture to 64-bit. Select the USB Flash Drive in the next screen and hit next to select the drive. Hit next for the final time and wait for the progress to complete.
Conclusion
Creating a Windows 7 bootable USB on Mac is not a simple task. Most of the tools fail on latest macOS Catalina. While some methods in the list are complicated and long, others face errors. This is why UUByte ISO Editor serves as the best option. The reviews are excellent and one can be sure of the disk to not face booting issues again. It truly saves a lot of time and makes the process look very simple with its convenient user interface.
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